Tractor Oil Seal 381907R91 50839D for Case IH Models A AV B M Cub – LeakProof DirectFit Replacement

Oil Seal 381907R91 50839D Replacement oil seal for tractors and agricultural equipment designed to stop oil leakage and protect internal components. Why you need this oil seal Prevents oil leaks that cause gearbox, transmission, and engine damage, reducing downtime and costs. Restores proper sealing on older tractors where seals have hardened, cracked, or worn. Provides a directfit replacement for the listed tractor models, simplifying repairs and maintenance. Key features and benefits Exact fit for listed part numbers: 381907R91 and 50839D. Verify these numbers against your parts list before ordering. Function: Primary sealing element to retain oil and keep dirt and debris out of housings and bearings. Compatibility: Designed to fit the following CaseIH tractor models: A, AV, B, BN, M, MD, MV, O4, Cub, 154, 184, 185, Lo Boy, Cub Lo Boy, MDTA, MDV, MTA, MV Super C, Super M, Super MD. Installationfriendly: Made to match original equipment dimensions for straightforward replacement with common hand tools. Durable performance: Built for continuous operation in agricultural environments where exposure to oil, dirt, and vibration is common. Practical applications and scenarios Field after seal failure: a leaking seal on a CaseIH A or B series tractor to stop seepage from the transmission and avoid fluid loss during field work. Restoring a vintage Cub or Lo Boy: Use this seal when rebuilding or maintaining older Cub and Lo Boy models to restore correct sealing and prolong component life. Routine maintenance on utility tractors: Fit the seal during scheduled service of M, MD, or MV series tractors to prevent future leaks and protect bearings and gears. What to check before Confirm the part numbers 381907R91 or 50839D match the seal called for in your parts manual. Verify tractor model and year to ensure compatibility. Inspect the housing and mating surfaces for damage or wear; or as needed for a secure seal. Simple installation tips Clean the bore and shaft thoroughly before fitting the seal. Press the seal evenly into the housing to avoid distortion. Recheck torque and alignment of related components after installation. This oil seal is a practical replacement part intended to restore reliable sealing on the compatible CaseIH tractor models listed above. Verify fitment with your parts manual or service records before installation.